Community structure of ground-water breeding mosquitoes driven by land use in a temperate wetland of Argentina

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• 作者：Mar&#xed ; a Victoria Cardo ; ^a ; ^{victoriacardo@ege.fcen.uba.ar"" rel=""nofollow} ; ^{victoriacardo@hotmail.com"" rel=""nofollow} ; Vezzani Dar&#xed ; o^a ; Carbajo An&#xed ; bal Eduardo^a
• 关键词：Culicidae ; Richness ; Culex ; Ochlerotatus ; Anthropic intervention ; Delta of Paran&#xe1 ; River
• 刊名：Acta Tropica
• 出版年：2011
• 出版时间：August 2011
• 年：2011
• 卷：119
• 期：2-3
• 页码：76-83
• 全文大小：420 K

文摘

Wetlands have traditionally been associated with harbouring mosquitoes, but the effect of the land use on their communities has not been thoroughly studied. We characterized the ground-water habitat availability and mosquito species richness and composition during a year-round survey in the predominant land uses (domestic areas, Salicaceae plantations, secondary forests and Scirpus giganteus marshes) of the Paraná Lower Delta, Argentina. Each land use presented a characteristically different number, composition, and diversity of ground-water habitats, and harboured mosquitoes throughout the year. Nearly half of the 824 habitats examined, consisting of 10 types, were positive for immatures. We identified 23 species from 7 genera, with Culex and Ochlerotatus species accounting for 81.7 % of all samples. Species richness was significantly lower in marshes than in the other land uses. Some species such as Culex dolosus s.l. and Ochlerotatus crinifer exhibited no habitat-type restrictions, while Uranotaenia nataliae and Mansonia indubitans presented specific habitat requirements. Our results strongly suggest that land use within temperate wetlands drives species richness and composition of ground-water mosquito communities through larval habitat availability.